Epidemiology of viral components causing respiratory problems in broilers in six Egyptian Governorates
Infectious bronchitis (IB), Newcastle disease (ND) and Avian influenza (AI) are highly contagious and the most economically important diseases of the poultry affecting the respiratory tract and causing economic losses in the poultry industry throughout the world. In the present study, 180 broiler fl...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Faculty of Veterinary Medicine, Beni-Suef University
2017-06-01
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| Series: | Journal of Veterinary Medical Research |
| Online Access: | http://www.bsu.edu.eg/bsujournals/Content.aspx?paperId=519&cat_id=1 |
| _version_ | 1819281187859857408 |
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| author | Taher M.T. Amer M.M. Arafa A. Saad F.E. |
| author_facet | Taher M.T. Amer M.M. Arafa A. Saad F.E. |
| author_sort | Taher M.T. |
| collection | DOAJ |
| description | Infectious bronchitis (IB), Newcastle disease (ND) and Avian influenza (AI) are highly contagious and the most economically important diseases of the poultry affecting the respiratory tract and causing economic losses in the poultry industry throughout the world. In the present study, 180 broiler flocks were sampled from 6 different Egyptian provinces (Giza, Qaluobia, Sharqia, Menofia, Al Behira and Fayoum) during 2014 to 2015. The birds showed respiratory illness and they were examined for 4 respiratory viral diseases; avian influenza (AI subtype H5 and H9), vNDV and IBV. All farms were vaccinated against IBV, ND and AI and were investigated using RT-PCR. The results showed that 41 out of 180 broiler farms were positive for either IBV or vND or AI-H5 and AI-H9 as a single infection as follows: 24, 10, 5 and 2 farms respectively. There were 62 farms detected as mixed infection, the highest incidence was shown in 40 farms co-infected with IBV and AI (H9) and 11 with IBV and vNDV, rRT-PCR results for each governorate separately go more or less parallel to that of all governorates collectively, There was no clear geographical preferences in positive viruses among governorates. Mortality rate and clinical signs incidence showed the highest percentage for birds reared in winter and Autumn compared with the other seasons. The results revealed that IBV as a single or a mixed infection had a major role in the respiratory problem in the field. |
| first_indexed | 2024-12-24T00:55:43Z |
| format | Article |
| id | doaj.art-ab4b9bb56ee948bea50613fb862cdfc1 |
| institution | Directory Open Access Journal |
| issn | 2357-0512 2357-0520 |
| language | English |
| last_indexed | 2024-12-24T00:55:43Z |
| publishDate | 2017-06-01 |
| publisher | Faculty of Veterinary Medicine, Beni-Suef University |
| record_format | Article |
| series | Journal of Veterinary Medical Research |
| spelling | doaj.art-ab4b9bb56ee948bea50613fb862cdfc12022-12-21T17:23:29ZengFaculty of Veterinary Medicine, Beni-Suef UniversityJournal of Veterinary Medical Research2357-05122357-05202017-06-012417183Epidemiology of viral components causing respiratory problems in broilers in six Egyptian GovernoratesTaher M.T.0Amer M.M.1Arafa A.2Saad F.E.3National Laboratory for Veterinary Quality Control on Poultry Production, Animal Health Research Institute,Dokki, Giza 12618, Egypt. National Laboratory for Veterinary Quality Control on Poultry Production, Animal Health Research Institute,Dokki, Giza 12618, Egypt. National Laboratory for Veterinary Quality Control on Poultry Production, Animal Health Research Institute,Dokki, Giza 12618, Egypt. National Laboratory for Veterinary Quality Control on Poultry Production, Animal Health Research Institute,Dokki, Giza 12618, Egypt. Infectious bronchitis (IB), Newcastle disease (ND) and Avian influenza (AI) are highly contagious and the most economically important diseases of the poultry affecting the respiratory tract and causing economic losses in the poultry industry throughout the world. In the present study, 180 broiler flocks were sampled from 6 different Egyptian provinces (Giza, Qaluobia, Sharqia, Menofia, Al Behira and Fayoum) during 2014 to 2015. The birds showed respiratory illness and they were examined for 4 respiratory viral diseases; avian influenza (AI subtype H5 and H9), vNDV and IBV. All farms were vaccinated against IBV, ND and AI and were investigated using RT-PCR. The results showed that 41 out of 180 broiler farms were positive for either IBV or vND or AI-H5 and AI-H9 as a single infection as follows: 24, 10, 5 and 2 farms respectively. There were 62 farms detected as mixed infection, the highest incidence was shown in 40 farms co-infected with IBV and AI (H9) and 11 with IBV and vNDV, rRT-PCR results for each governorate separately go more or less parallel to that of all governorates collectively, There was no clear geographical preferences in positive viruses among governorates. Mortality rate and clinical signs incidence showed the highest percentage for birds reared in winter and Autumn compared with the other seasons. The results revealed that IBV as a single or a mixed infection had a major role in the respiratory problem in the field.http://www.bsu.edu.eg/bsujournals/Content.aspx?paperId=519&cat_id=1 |
| spellingShingle | Taher M.T. Amer M.M. Arafa A. Saad F.E. Epidemiology of viral components causing respiratory problems in broilers in six Egyptian Governorates Journal of Veterinary Medical Research |
| title | Epidemiology of viral components causing respiratory problems in broilers in six Egyptian Governorates |
| title_full | Epidemiology of viral components causing respiratory problems in broilers in six Egyptian Governorates |
| title_fullStr | Epidemiology of viral components causing respiratory problems in broilers in six Egyptian Governorates |
| title_full_unstemmed | Epidemiology of viral components causing respiratory problems in broilers in six Egyptian Governorates |
| title_short | Epidemiology of viral components causing respiratory problems in broilers in six Egyptian Governorates |
| title_sort | epidemiology of viral components causing respiratory problems in broilers in six egyptian governorates |
| url | http://www.bsu.edu.eg/bsujournals/Content.aspx?paperId=519&cat_id=1 |
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